/*
 * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package me.ahoo.wow.messaging

import org.hamcrest.MatcherAssert.assertThat
import org.hamcrest.Matchers.aMapWithSize
import org.hamcrest.Matchers.equalTo
import org.junit.jupiter.api.Test

internal class HeaderTest {
    @Test
    fun ofWhenNull() {
        assertThat(null.asHeader(), equalTo(DefaultHeader.empty()))
    }

    @Test
    fun ofWhenEmpty() {
        assertThat(HashMap<String, String>().asHeader(), equalTo(DefaultHeader.empty()))
    }

    @Test
    fun ofWhenHeader() {
        val values = HashMap<String, String>()
        values["KEY"] = "VALUE"
        val header = DefaultHeader(values)
        assertThat(header.asHeader(), equalTo(header))
    }

    @Test
    fun ofWhenNotEmpty() {
        val values = HashMap<String, String>()
        values["KEY"] = "VALUE"
        assertThat(values.asHeader(), aMapWithSize(1))
    }
}
